Year	constant 2015 US$
2007	3034.9524157848114
2008	3308.045119995037
2009	3462.2752694099204
2010	3758.761982230281
2011	3770.412414910063
2012	3839.7609934051734
2013	3964.6518259398244
2014	4035.812231085651
2015	3911.5827867095545
2016	3628.193167035917
2017	3198.9244056334674
2018	3104.492757784189
2019	3012.215016318332
2020	2784.2819144399073
2021	2567.9898210292167
2022	2448.404496267448